#include <iostream>
using namespace std;
int fun(int n);
static int a(10);
int main(){
    int a(3);
    int b;
    b+=fun(a);
    cout<<"a="<<a<<",b="<<b<<endl;
    cout<<"========================="<<endl;
    b+= fun(a);
    cout<<"a="<<a<<",b="<<b<<endl;
    return 0;
}


int fun(int c){
    int b(5);
    b+=a;
    cout<<"a="<<a<<",b="<<b<<endl;
    return b;
}
